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He/she probably copied it from somewhere else and the \(\LaTeX\) didn't show up

Yep.....good  job,  MWH!!!!!!

ok, ill take a look

best answer yayyyy

yes, tysm

\(\frac{\sqrt{160}}{\sqrt{252}}\cdot \frac{\sqrt{245}}{\sqrt{128}}\)

\(=\frac{7\sqrt{5}}{8\sqrt{2}}\cdot \frac{2\sqrt{10}}{3\sqrt{7}}\)

\(=\frac{2\sqrt{10}\cdot 7\sqrt{5}}{3\sqrt{7}\cdot 8\sqrt{2}}\)

\(=\frac{14\sqrt{10}\sqrt{5}}{24\sqrt{7}\sqrt{2}}\)

\(=\frac{\sqrt{7}\sqrt{10}\sqrt{5}}{12\sqrt{2}}\)

\(=\frac{\sqrt{7}\sqrt{2}\sqrt{5}\sqrt{5}}{2^2\cdot \:3\sqrt{2}}\)

\(=\frac{5\sqrt{7}}{3\cdot \:2\sqrt{2}\sqrt{2}}\)

\(=\frac{5\sqrt{7}}{12}\)

pray that i didn't mess up

Sum of  the  roots =  -b

Product of the   roots =  c

So

r^2s  +  s^2 r  = 10

rs  ( r + s)  =  10

rs              r +  s                   b            c 

-10              -1                     1           -10

-5               - 2                     2           -  5

-2              -  5                     5           -  2                  

-1              -10                   10           -  1 

1                 10                 -10               1

2                   5                 -  5               2

5                   2                 -  2               5

10                 1                 -  1             10

I believe  we  have  a oblique  pyramid.....

Its volume  is  (1/3) (1/2)  [ AEHD ]  ( EF )   =

(1/6)  [  15 * 6  ]  (4)     = 

60  units^3 

Hey there, Guest!

It looks like CPhill already answered that question right here: https://web2.0calc.com/questions/mathematics_66.

Hope this helped!? XD

( ﾟдﾟ)つ Bye

Hey there, Guest!

It looks like CPhill already answered that question right here: https://web2.0calc.com/questions/mathematics_66

Hope this helped!? XD

( ﾟдﾟ)つ Bye

Any two sides of a triangle must sum greater than the remaining side

8+x>9

x>1

9+x>8

 x > -1    ( not useable)

9+8 > x

 x< 17                 so  x  >1   and <17      (1,17)            1

Excellent 

Let's say cayden had x dollar. So Jayden had (784-x) dollar from 1st information.

From 2nd information:

x-x/6=(784-x)-124,

or, x*11/6=660

or, x=360.

So, cayden had 360$ at first.

Since the sample space of 4 dice is 6^4 =1,296, which counts all the "permutations" of the 4 dice, you should therefore count all the permutations whose product==24, since they are all included and counted in the total of 1296 permutations. Therefore, that number of permutations is:

1146  1164  1226  1234  1243  1262  1324  1342  1416  1423  1432  1461  1614  1622  1641  2126  2134  2143  2162  2216  2223  2232  2261  2314  2322  2341  2413  2431  2612  2621  3124  3142  3214  3222  3241  3412  3421  4116  4123  4132  4161  4213  4231  4312  4321  4611  6114  6122  6141  6212  6221  6411  Total =  52

Then the probability is: 52 / 1296 ==13 / 324

Question answered here

Jenna walks the distance Ginny skates      x = jenna walk distance = ginny skate distance

Ginny walks the distance Jenna skates      y = ginny walk distance = jenna skate distance

distance = rate * time

  jenna      x/4 + y/9   is total time

  ginny      x/8 + y/3   is total time

                        the total times are the same           and the distance   x+ y =20     or    y = 20 - x

   x/4 + (20-x)/9  = x/8 + (20-x)/3

  x/8 = 2(20-x)/9 

  x/8 = (40-2x)/9

9/8 x = 40 -2x

25/8x = 40 

x = 12.8     y = 7.2  miles

Jenna walks 12.8 miles @ 4m/h    and skates 7.2 miles  @ 9 m/h =   4 hours total 

Ginny skates 12.8 miles @ 8 m/h   and  walks 7.2 m at 3 m/h =  4 hr                              If they start at 4 ...they arrive at 8:00

1/5*1/4=1/5    1/5+1/5=2/5    1-2/5=3/5     3/5----)233-77=156

1/5----) 156÷3=52      5/5---)52*5=260

f(5) = 5^2 -2(5)+5 = 20

g(5) = -13 

g(f(5)) = g(20) = 2       f(g(5)) = -13^2 -2(-13)+5 = 200

200-2 = 198

65 + x + x = 180

65 + 65 + x = 180

Can you take it from here?

=^._.^=

g  = original cards

       gives 1/5 to brother leaving him 4/5 g

             gives 1/4 of this amount leaving him 3/4 (4/5 g )

                      adds 77 cards   3/4 (4/5 g) + 77  = 233      solve for g = 260 cards  originally 

Find price per kg      ....    then multiply by  kg

10 /  4        *        14     = ____________   dollars

If there are 22 students who bought their calculators to class, and 13 of them are girls, then that means that 9 of them are boys. Since there are 16 boys in total, there are 16-9=7 boys who did not bring their calculators to class.